wyznacz x z równań a) 2x-y=5 b) 1/3y=x-3 c) 3(x-y)=2x d) 2/3x=3/4y e) 4x+2y=1 f)6x-2/3y=2 z góry dziekuje :D

a) 2x-y=5 2x=5+y/2 x=(5+y)/2 b) 1/3y=x-3/3 y=3x-9 3x=-9-y/:3 x=-3-1/3y c) 3(x-y)=2x 3x-3y=2x x=3y d) 2/3x=3/4y/*12 8x=9y/:8 x=9/8y e) 4x+2y=1 4x=1-2y/:4 x=1/4-1/2y f)6x-2/3y=2/*3 18x-2y=6 18x=6+2y/:18 x=1/3+1/9y

2x - y = 5 / + y 2x = 5 + y / ÷2 x = (5 + y) ÷ 2 1/3y = x - 3 / +3 1/3y + 3 = x x = 1/3 + 3 3(x-y) = 2x 3x - 3y = 2x / -(2x) x - 3y = 0 / +(3y) x = 3y 2/3x = 3/4y / ÷(2/3) x = (3/4y) ÷ 2/3 4x + 2y = 1 / - (2y) 4x = 1 - 2y / ÷ 4 x = (1 - 2y) ÷ 4 6x - 2/3y = 2 / +2/3y 6x = 2 +2/3y / ÷ 6 x = (2 +2/3y)÷6

a) 2x-y=5 2x=5+y x=5+y/2 b)1/3y=x-3 x=1/3y+3 c)3(x-y)=2x 3x-3y=2x 3x=2x+3y x=3y d)2/3x=3/4y x=9/8y e)4x+2y=1 4x=1-2y x=1/4-1/2y f)6x-2/3y=2 6x=2+2/3y x=1/3+1/9y